<?php
/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @category   Zend
 * @package    Zend_Paginator
 * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 * @version    $Id: Jumping.php 18951 2009-11-12 16:26:19Z alexander $
 */

/**
 * @see Zend_Paginator_ScrollingStyle_Interface
 */
require_once 'Zend/Paginator/ScrollingStyle/Interface.php';

/**
 * A scrolling style in which the cursor advances to the upper bound
 * of the page range, the page range "jumps" to the next section, and
 * the cursor moves back to the beginning of the range.
 *
 * @category   Zend
 * @package    Zend_Paginator
 * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
class Zend_Paginator_ScrollingStyle_Jumping implements Zend_Paginator_ScrollingStyle_Interface
{
	/**
	 * Returns an array of "local" pages given a page number and range.
	 *
	 * @param  Zend_Paginator $paginator
	 * @param  integer $pageRange Unused
	 * @return array
	 */
	public function getPages(Zend_Paginator $paginator, $pageRange = null)
	{
		$pageRange  = $paginator->getPageRange();
		$pageNumber = $paginator->getCurrentPageNumber();

		$delta = $pageNumber % $pageRange;

		if ($delta == 0) {
			$delta = $pageRange;
		}

		$offset     = $pageNumber - $delta;
		$lowerBound = $offset + 1;
		$upperBound = $offset + $pageRange;

		return $paginator->getPagesInRange($lowerBound, $upperBound);
	}
}